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a <br /> Table 2 <br /> HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS <br /> May 1990 Through May 2005 <br /> Former BP Oil 11192 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE TBA Comments <br /> Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021B 8260B 8260B <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µgll) (µg11) (µg11) (µg11) (µg/1) (µg11) (µg/l) (µg11) (µfill) <br /> MW-4 continued <br /> 12/9/1992 675 - -- -- -- -- -- -- -- -- -- -- -- -- Dry <br /> 3/11/1993 6 75 -- - - __ __ __ __ __ __ _ Dry <br /> 6/15/1993 6 75 2801 000 -2126 <br /> 9/15/1993 6 75 2850 000 -21 75 -049 <br /> 12/22/1993 675 2833 000 -21 58 0 17 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 -- - -- <br /> 4/1/1994 675 2745 000 -2070 088 <br /> 7/27/1994 6 75 2746 000 -2071 -001 190 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 -- -- <br /> 11/30/1994 6 75 2797 000 -21 22 -051 <br /> 2/15/1995 6 75 2685 000 -20 10 1 12 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- -- - <br /> 4/21/1995 6 75 2477 000 -1802 208 <br /> 7/19/1995 6 75 2407 000 -1732 070 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 -- -- -- <br /> P 10/20/1995 6 75 2450 000 -17 75 -043 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<5 0 - -- Pre-purge <br /> D 10/20/1995 6 75 2450 000 -1775 -043 ND<50 -- ND<0 50 ND<0 50 ND<0 50 ND<l 0 ND<5 0 -- -- <br /> P 4/23/1996 675 21 13 000 -1438 337 ND<500 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 14 -- - Pre-purge <br /> D 4/23/1996 675 21 13 000 -1438 3 37 ND<500 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<10 -- - <br /> 7/12/1996 6 75 2042 000 -1367 0 71 <br /> 10/18/1996 675 1963 0 00 -1288 079 130 -- ND<0 5 ND<1 0 ND<l 0 ND<l 0 ND<10 -- - <br /> 2/26/1998 675 13 01 0 00 -626 662 ND<50 -- ND<0 5 ND<1 0 ND<I 0 ND<1 0 ND<10 -- <br /> 7/7/1998 675 1261 000 -5 86 040 ND<50 -- ND<0 5 ND<1 0 ND<I 0 ND<1 0 ND<l0 -- -- <br /> 1/19/1999 675 1459 000 -7 84 -1 98 ND<50 -- ND<1 0 ND<1 0 ND<1 0 ND<1 0 26 - -- <br /> 7/14/1999 6 75 1355 000 -680 104 ND<50 ND<1 0 ND<1 0 ND<1 0 ND<l 0 83 -- -- <br /> 10/7/1999 675 1508 000 -833 -1 53 220 - ND<1 0 ND<1 0 ND<I 0 ND<1 0 170 - -- <br /> 1/20/2000 6 75 1540 000 -8 65 -032 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 320 -- -- <br /> 4/11/2000 675 1431 000 -756 109 ND<50 -- ND<0 5 ND<0 5 ND<0 5 ND<0 5 6 4 -- -- <br /> 11192 Page 6 of 19 <br />